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Elon Musk confirmed xAI’s Grok 4.20 will launch in 3–4 weeks, likely late December or early January. The model, spotted on Alpha Arena, outperformed GPT-5.1 and Gemini 3 Pro in simulated stock trading. Grok 4.20 promises better reasoning, financial analysis, and real-world problem-solving, while full features will be revealed at launch.
